Analysis of dioxin-like compounds formed in the combustion of tomato plant.

In an initial effort to minimize some of the uncertainty regarding the open burning of biomass, emission factors of carbon oxides, light hydrocarbons, PAHs, PCDD/Fs and dioxin-like PCBs were determined in the combustion of tomato plant in a residential stove and in two runs at 500 degrees C and 850 degrees C in a laboratory scale reactor. In all the runs nearly the same PAHs were identified, being naphthalene the main obtained. Combustion of tomato plant at 500 degrees C in the laboratory scale reactor produced the highest emission factors for all compounds analyzed. Tomato plant was analyzed for PCDD/F and dioxin-like PCB content in order to establish the level of pollutants in the sample itself. Ash obtained in the combustion carried out in the residential stove was analyzed for the dioxin-like compound content and compared with a sample of ash collected from the open burning of tomato plant.